CBSE Solutions for MCQ 12 Science Maths Determinant in English to enable students to get Solutions in a narrative video format for the specific question.
Expert Teacher provides CBSE Solutions for MCQ 12 Science Maths Determinant through Video Solutions in English language. This video solution will be useful for students to understand how to write an answer in exam in order to score more marks. This teacher uses a narrative style for a question from Determinant not only to explain the proper method of answering question, but deriving right answer too.
Please find the question below and view the Solution in a narrative video format.
Question:
Solution Video in English:
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Question 1 : Find the adjoint of the matrix . (View Answer Video)
Question 2 : If a, b, c are in AP, then determinant . (View Answer Video)
Question 3 : Using the properties of determinants, evaluate . (View Answer Video)
Question 4 : Evaluate the determinant: . (View Answer Video)
Question 5 : Which of the following is correct? (View Answer Video)
Question 1 : The objective function is maximum or minimum, which lies on the boundary of the feasible region. (View Answer Video)
Question 1 : The total cost C(x) (in Rs) associated with the production of 'x' units of an item is given by :
C (x)=0.005x3-0.02x2+30x+5000.
Find the marginal cost when 3 units are produced, where by marginal cost we mean the instantaneous rate of change of total cost at any level of output. (View Answer Video)
Question 2 : Find the maximum profit that a company can make if the profit function is. (View Answer Video)
Question 3 : It is given that at x=1, the function attains its maximum value on the interval[0,2]. Find the value of a? (View Answer Video)
Question 4 : Sand is pouring from a pipe at the rate of . The falling sand forms a cone on the ground in such a way that the height of the cone is always one-sixth of the radius of the base. How fast is the height of the sand cone increasing, when the height is 4 cm? (View Answer Video)
Question 5 : The point on the curve which is nearest to the point (0, 5) is :
(View Answer Video)
Question 1 : Find a vector of magnitude making an angle of with x-axis, with y-axis and an acute angle with z-axis. (View Answer Video)
Question 2 : if a, b, c are unit vectors such that a + b + c = 0, then find the value of a.b + b.c + c.a. (View Answer Video)
Question 3 : Find the direction cosines of the vector joining the points A(1, 2, -3) and B(-1, -2, 1) directed from B to A. (View Answer Video)
Question 4 : Find the value of x and y so that the vectors and are equal. (View Answer Video)
Question 5 : Find |x|, if for a unit vector a,(x - a).(x + a) = 12. (View Answer Video)